Process Control and Instrumentation
Continuous measurement of moisture content of paper in paper industry is done by measuring the

None of these
Magnetic susceptibility
Thermal conductivity through the paper
Electrical resistance through the paper

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Process Control and Instrumentation
Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the

Object has varying emissivity
Object is transparent
Enhancement or attentuation of redia-tion occurs in the sighting path
Object and surrounding are at almost the same temperature

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Process Control and Instrumentation
Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by

Accounting for the tube expansion
Filling nitrogen under pressure in the stem
Increasing the diameter of the tube
Using steel tube in place of glass tube

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